<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000910682
<NAME> DELAWARE GROUP ADVISER FUNDS
<SERIES>
<NUMBER> 044
<NAME> DELAWARE OVERSEAS EQUITY FUND INSTITUTIONAL CLASS
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> OCT-31-1999
<PERIOD-END> APR-30-2000
<INVESTMENTS-AT-COST> 9,868,618
<INVESTMENTS-AT-VALUE> 9,666,708
<RECEIVABLES> 160,393
<ASSETS-OTHER> 512,202
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 10,339,303
<PAYABLE-FOR-SECURITIES> 334,076
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 91,018
<TOTAL-LIABILITIES> 425,094
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 10,002,005
<SHARES-COMMON-STOCK> 16,971
<SHARES-COMMON-PRIOR> 8,828
<ACCUMULATED-NII-CURRENT> (4,625)
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 118,988
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (202,159)
<NET-ASSETS> 137,116
<DIVIDEND-INCOME> 64,939
<INTEREST-INCOME> 28,219
<OTHER-INCOME> (5,048)
<EXPENSES-NET> 61,261
<NET-INVESTMENT-INCOME> 26,849
<REALIZED-GAINS-CURRENT> 112,763
<APPREC-INCREASE-CURRENT> (110,127)
<NET-CHANGE-FROM-OPS> 29,485
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 1,217
<DISTRIBUTIONS-OF-GAINS> 1,116
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 15,569
<NUMBER-OF-SHARES-REDEEMED> 7,713
<SHARES-REINVESTED> 287
<NET-CHANGE-IN-ASSETS> 6,333,020
<ACCUMULATED-NII-PRIOR> 19,166
<ACCUMULATED-GAINS-PRIOR> 58,378
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 24,062
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 144,271
<AVERAGE-NET-ASSETS> 96,073
<PER-SHARE-NAV-BEGIN> 7.810
<PER-SHARE-NII> 0.059
<PER-SHARE-GAIN-APPREC> 0.441
<PER-SHARE-DIVIDEND> 0.120
<PER-SHARE-DISTRIBUTIONS> 0.110
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 8.080
<EXPENSE-RATIO> 1.700
</TABLE>
